# Dr.脳トレ vs Soroban Calculation

The clearest difference is ads: Soroban Calculation at none against Dr.脳トレ's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Dr.脳トレ | Soroban Calculation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Every 3 days |
| Size | 10 MB | 28 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [CMSite Inc.](https://appshunter.io/developer/382777427) | [Smart Connections](https://appshunter.io/developer/1656004006) |

## What reviewers say

### Dr.脳トレ

[App page](https://appshunter.io/ios/app/dr/id6806799015)

**In-app purchases:** none


### Soroban Calculation

[App page](https://appshunter.io/ios/app/soroban-calculation/id6808877213)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Dr.脳トレ free?

Dr.脳トレ is free to download, with no in-app purchases.

### Is Soroban Calculation free?

Soroban Calculation is free to download, with no in-app purchases.

### Do Dr.脳トレ or Soroban Calculation have ads?

Dr.脳トレ shows ads; Soroban Calculation does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*